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fpga_helpers.S 2.55 KB
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Oliver Swede's avatar
plat/arm/board/arm_fpga: Enable basic BL31 port for an FPGA image    
Oliver Swede committed
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/*
 * Copyright (c) 2020, ARM Limited and Contributors. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#include <arch.h>
#include <asm_macros.S>
#include <common/bl_common.h>
#include <platform_def.h>

	.globl	plat_get_my_entrypoint
	.globl	plat_secondary_cold_boot_setup
	.globl	plat_is_my_cpu_primary
	.globl	platform_mem_init
	.globl	plat_my_core_pos
	.globl	plat_fpga_calc_core_pos
	.globl	plat_crash_console_init
	.globl	plat_crash_console_putc
	.globl	plat_crash_console_flush

/* -----------------------------------------------------------------------
 * unsigned long plat_get_my_entrypoint (void);
 * TODO: determine if warm boot should be supported for FPGA images
 * -----------------------------------------------------------------------
 */
func plat_get_my_entrypoint
	mov	x0, #0
	ret
endfunc plat_get_my_entrypoint

/* -----------------------------------------------------------------------
 * void plat_secondary_cold_boot_setup (void);
 * TODO: add placeholder PSCI implementation for FPGA images
 * -----------------------------------------------------------------------
 */
func plat_secondary_cold_boot_setup
	ret
endfunc plat_secondary_cold_boot_setup

/* -----------------------------------------------------------------------
 * unsigned int plat_is_my_cpu_primary (void);
 *
 * Find out whether the current cpu is the primary cpu
 * -----------------------------------------------------------------------
 */
func plat_is_my_cpu_primary
	mrs	x0, mpidr_el1
	mov_imm	x1, MPIDR_AFFINITY_MASK
	and	x0, x0, x1
	cmp	x0, #FPGA_PRIMARY_CPU
	cset	w0, eq
	ret
endfunc plat_is_my_cpu_primary

func platform_mem_init
	ret
endfunc platform_mem_init

func plat_my_core_pos
	mrs	x0, mpidr_el1
	b	plat_fpga_calc_core_pos
endfunc plat_my_core_pos

/* -----------------------------------------------------------------------
 * unsigned int plat_fpga_calc_core_pos(u_register_t mpidr)
 * TODO: add calculation of the core position for FPGA image CPUs
 * -----------------------------------------------------------------------
 */
func plat_fpga_calc_core_pos
	mov	x0, #0
	ret
endfunc plat_fpga_calc_core_pos

func plat_crash_console_init
	mov_imm	x0, PLAT_FPGA_CRASH_UART_BASE
	mov_imm	x1, PLAT_FPGA_CRASH_UART_CLK_IN_HZ
	mov_imm	x2, PLAT_FPGA_CONSOLE_BAUDRATE
	b	console_pl011_core_init
endfunc plat_crash_console_init

func plat_crash_console_putc
	mov_imm	x1, PLAT_FPGA_CRASH_UART_BASE
	b	console_pl011_core_putc
endfunc plat_crash_console_putc

func plat_crash_console_flush
	mov_imm	x0, PLAT_FPGA_CRASH_UART_BASE
	b	console_pl011_core_flush
endfunc plat_crash_console_flush